Rotary pump



C. W. JACKMAN.

ROTARY PUMP.

APPLICATION FILED AUG-H, 1919.

Patented Oct, 2 5, 1921.

2 SHEETSSHEEI l.

gvvuwntoz C, W JIYCKM YM attoinc q UNITED STATES PATENT OFFICE.

CHARLES W. J'ACKMAN, OF DETROIT, MICHIGAN, ASSIGNOR 0F ONE-HALF TO MILES I.

JACKMAN, OF DETROIT, MICHIGAN ROTARY PUMP.

Specification of Letters Patent.

Patented Oct. 25, 1921.

Application filed August 11, 1919. Serial No. 316,589.

- fication.

This invention relates to the class of f0- tary pumps of the radial flow type, and has for one of its objects to simplify the construction and increase the efficiency and utility of devices of this character.

Another object of this invention is to produce a pump of this character which may be readily and quickly reversed without discarding or changing any of the parts.

Another object of the inventlon is to provide a pump of this character in which the parts remain unchanged when the pump is operated in either direction.

With these and other objects in view the invention consists in certain novel features of construction as hereafter shown and described and then specifically pointed out in the claim, and in the drawings illustrative of the preferred embodiment of the invention,

Figure 1 is a side elevation proved pump.

Fig. 2 is a sectional side elevation.

Fig. 3 is a sectional detail illustrating the operation of the rotor and abutment.

Fig. 4 is a detached perspective View of one of the abutments.

Fig. 5 is a detached perspective view of one of the ring gears for operating the abutment.

Fig. 6 is an end elevation.

Fig. 7 is a vertical section on the line 77 of Fig. 1 looking in the direction of the arrow.

Fig. 8 is a side View of the rotor.

Fig. 9 is a plan view of the rotor.

Fig. 10 is a detail view illustrating a modification in the manner of operating the abutments.

Fig. 11 is a detached perspective view of one of the combined glands, packing and gear centering members.

The improved pump comprises a drum or body 10 closed at one side and provided at the other side with a closure 11 extending over the open side. Protruding from the of the imdrum at uniform distances are chambers 12, the chambers being closed at one end and open at the other end, with the centers of the chambers Ipreferably at the inner peripheral line of t e bore of the drum, as indicated 1n Fig. 2. Any required number of the chambers 12 may be employed but for the purpose of illustration four are shown. Formed on the body of the drum 10 at each side of the chambers 12 are bosses 13 tapped to rece ve attaching bolts, and the closure 11 s provided with enlargements having openlngs corresponding to and registering with the open sides of the chambers and providin access to the chambers.

ounted for oscillation in each of the chambers 12 is an abutment member, each abutment comprising a supporting disk 18 fittmg in a seat 19 in the closed wall of the chamber and from which a stud 17 extends.

The body portion of each abutment is semi cylindrical in outline as shown at 20 in Fig. 4 and with a semi-circular closure 21 at the other end.

Protruding from the closed side of the chamber 12 are bosses 15 one for each chamber, and bored to receive wear bushings 16, the latter constituting bearings for the studs 17 of the abutment which are thus mounted for rotation in the chambers.

Protruding from the half closure 21 is a hub 22 over which an annular or ring gear '23 fits and is held from rotation thereon by a key en aging in keyways in the hub members. rotruding from the hub 22 is a stud 24 corresponding to the stud 17 and in aline- Inent therewith.

Bearing upon the closure 11 and extending over each of the openings therein is a glandlike device 25 having projections at the ends to receive attachin cap screws 26 tapped into the bosses 13. ach gland 25 is bored to receive one of the studs 24, the bore being preferably provided with a wear bushing 27 as shown.

Projecting inwardly from each gland 25 is a filler member 28 which closely engage in the openings in the closures 11 and operate as packings to prevent leakage, as well as to center the glands.

Projecting from the closed side of the drum 10 is a relatively large chamber 29 while a similar chamber 30 projects from the closure 11.

The chamber 29 is provided with a threaded opening to receive a pipe 31 while the chamber 30 is provided with a threaded opening to receive a similar pipe 32.

When the pump is operated in one direction the pipe 32 is the lntake while the pipe 31 is the outlet, and when the pump is operated in the other direction the pipe 31 becomes the intake and the pipe 32 the outlet.

The chamber 30 communicates with the interior of the drum 10 through the closure 11 while the chamber 29 communicates with the interior of the drum 10 through the rear wall of the latter.

The chambers 29 and 30 are provided respectively with bearings 33 and 34 suitably packed, to support the main drive shaft 35.

Mounted within the drum 10 upon the shaft 35 and rotative therewith, is a rotor or piston element and including a central hollow shell or body portion 36 a hub portion 37 and oppositely directed wing or branch portions 38. The outer faces 38' of the wing portions 38 are curved to engage the inner face of the drum 10 and are wider than the inwardly opening portions of the chambers 12, so that they consecutively close the openings of the chambers and extend beyond their side edges as they pass them during the rotation of the piston or rotor.

The body portion 36 of the rotor and the wing portions 38 are hollow and communicate with each other, while the hub portion 37 extends entirely through the body portion and beyond its side faces and bears at the outer ends against stop collars, indicated at 39 on the shaft 35.

Extending between the hub 37 and the outer drum engaging ends of the wings 38 are partitions 40-41.

The opposite sides of the body portion 36 between the wing portions 38 are segmental in outline, as shown at 38, and located within the body portion and extending between the segmental portions and the parts of the hub within the body and the parts of the partitions 40 and 41 within the body, are other partitions 42 and 43 the latter being arranged reversely oblique, as indicated by dotted lines in Fig. 9.

The body, portion 36 of the piston or rotor is formed with side openings indicated at 44 and 45 the opening 44 being surrounded by an annular flange 46 to support a ring gear 47.

The partition 42 provides communication between the interior of one of the wings 38 and the side opening 44, while the partition 43 provides communication between the interior ofthe other wing 38 and the other side opening 45.

When the parts-are assembled the smaller ring gears 23 a3e in constant engagement with the larger ring gear 47 so that when the piston is rotated by power applied to the shaft 35, the abutments 182021 will be correspondingly rota-ted.

The gears will be so proportioned that when the ends 38 of the wings 38 of the piston are passing the abutments, the portions 20 of two of the latter will be turned outwardly Within the chambers 12 while the solid portions 20 of the other two abutments will be turned inwardly in engagement with the imperforate segmental peripheries of the piston body, 36, as shown in Fig. 2. By this means the portions 20 of two of the abutments are moved out of the way of the moving wings of the piston, while the solid portions of the other two abutments are caused to roll water tight against the segmental portions of the body 36.

By this means closed pockets are consecutively formed within the drum 10 as the piston is rotated.

As the piston is rotated in one direction the water or the liquid flowing through the intake conductor 32 is caught in the hollow wings 38 alternately and continuously and forcibly discharged through the outlet conductor 31, thus producing the desirable continuous radial How of the liquid.

By reversing the motion of the shaft 35 the direction of flow will be reversed, as will be obvious, without changing any of the parts.

The improved apparatus is simple in construction' and can be inexpensively manufac tured as the drum 10, the chambers 12, the seats 19 can be machined with the minimum of labor, while the piston or rotor member may be likewise machined.

The arrangement of parts enables suitable packing elements to be disposed between the working parts and thus insures liquid tight joints and prevents leakage.

The arrangement shown so balances the parts that pulsations are practically obviated, due to the manner in which the piston or rotor and the abutments cooperate.

The arrangement shown is the preferable one, but it is not desired to limit the construction or the arrangement of parts to those shown, as modifications within the scope of the claim may be made without departing from the principle of the invention, or sacrificing any of its advantages.

In Fig. 10 a modification in the construction is shown consisting in extending the shaft 35 and the studs 17 beyond the closed rear side 11 of the shell and supplying the extended portion of the shaft 35 with a master gear 48 and the extended studs 17 with pinions 49, as shown in Fig. 10. This arrangement dispenses with the annular support 46, and the ring gears 23 and 47 and substitutes the gears 48 and 49 therefor.

What I claim:

A pump including a casing having a pluentrance; of the chambers so that they bridge the openings and extend beyond the edges of r the same when inone position to cut off the passage for a period of time at each revolution of the rotor and said segmental portions operating against the. interior of the casing and the cylindrical central portion rolling upon the segmental portion of the abutment when in another position.

In testimony whereof I afiix my signature hereto. 1

CHARLES W. JAUKMAN. 

